Table 1 OC stress measurements in the Shuichang iron mine.
From: Comparison and evaluation of overcoring and hydraulic fracturing stress measurements
No | Depth (m) | Maximum principal stress σ1 | Intermediate principal stress σ2 | Minimum principal stress σ3 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Value (MPa) | Direction (°) | Dip (°) | Value (MPa) | Direction (°) | Dip (°) | Value (MPa) | Direction (°) | Dip (°) | ||
1 | 81 | 4.07 | 272.2 | − 7.3 | 2.38 | 3.9 | − 13.3 | 2.16 | 154.2 | − 74.8 |
2 | 91.5 | 4.26 | 90.6 | − 0.8 | 2.86 | 180.6 | − 2.9 | 2.68 | 344.9 | − 87.0 |
3 | 56 | 3.68 | 98.9 | − 7.2 | 2.33 | 189.7 | − 6.2 | 2.03 | 319.8 | 80.5 |
